Built-in modules review

Andy Whitcroft apw at canonical.com
Wed Mar 17 11:50:29 UTC 2010

On Tue, Mar 16, 2010 at 02:38:23PM -0400, Chase Douglas wrote:
> On Tue, Mar 16, 2010 at 2:09 PM, Andy Whitcroft <apw at canonical.com> wrote:
> > What I am trying to say is that there is a cost for not building them in,
> > but there is also a cost for building them in.  The cost for 'not' is a
> > very small boot penalty, the cost 'for' is the flexibility for us to configure, update,
> > and replace drivers on an ongoing basis.
> So is this small boot penalty something we really need to avoid in the
> most popular hardware? If it's very small, why not make them all
> dynamic?

Its small, but large enough to bust our boot budget, we were less than
.1s inside budget overall last I looked.

> If this decision has been made with careful consideration of the
> weighting of boot speed vs flexibility, then I'm satisfied. I just
> want to be sure we don't encounter the exact same problem we are
> having the the pata drivers in the name of a few milliseconds.


More information about the kernel-team mailing list